108 lines
3.2 KiB
Java
108 lines
3.2 KiB
Java
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/*
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* Copyright (c) 2014 Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package org.openjdk.bench.java.net;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.net.InetAddress;
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import java.net.ServerSocket;
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import java.net.Socket;
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import java.net.SocketException;
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import java.util.concurrent.TimeUnit;
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import org.openjdk.jmh.annotations.BenchmarkMode;
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import org.openjdk.jmh.annotations.Benchmark;
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import org.openjdk.jmh.annotations.Mode;
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import org.openjdk.jmh.annotations.OutputTimeUnit;
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import org.openjdk.jmh.annotations.Scope;
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import org.openjdk.jmh.annotations.Setup;
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import org.openjdk.jmh.annotations.State;
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import org.openjdk.jmh.annotations.TearDown;
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/**
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* Tests the overheads of I/O API.
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* This test is known to depend heavily on network conditions and paltform.
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*/
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@BenchmarkMode(Mode.Throughput)
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@OutputTimeUnit(TimeUnit.MILLISECONDS)
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@State(Scope.Thread)
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public class SocketReadWrite {
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private OutputStream os;
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private InputStream is;
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private ServerSocket ss;
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private Socket s1, s2;
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private ReadThread rt;
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@Setup
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public void beforeRun() throws IOException {
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InetAddress iaddr = InetAddress.getLocalHost();
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ss = new ServerSocket(0);
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s1 = new Socket(iaddr, ss.getLocalPort());
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s2 = ss.accept();
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os = s1.getOutputStream();
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is = s2.getInputStream();
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rt = new ReadThread(is);
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rt.start();
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}
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@TearDown
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public void afterRun() throws IOException, InterruptedException {
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os.write(0);
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os.close();
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is.close();
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s1.close();
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s2.close();
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ss.close();
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rt.join();
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}
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@Benchmark
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public void test() throws IOException {
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os.write((byte) 4711);
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}
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static class ReadThread extends Thread {
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private InputStream is;
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public ReadThread(InputStream is) {
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this.is = is;
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}
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public void run() {
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try {
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while (is.read() > 0);
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} catch (SocketException ex) {
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// ignore - most likely "socket closed", which means shutdown
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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}
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